Our warmest wetsuit booties for the most extreme cold conditions. Made from 7mm 85% Yulex® natural rubber/15% synthetic rubber by polymer content, with 100% external seam sealing. Best for water temperatures below 45° F/ 7° C. Made in a Fair Trade Certified™ factory. The Regulator® 7mm Round Toe Booties is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia Regulator® 7mm Round Toe Surf Booties in Black, Size 11